The Belfast-based Style Academy agency booked Aicken, who received a "modest sum" for the shoot. She was first spotted by Rihanna's people in a crowd during shooting of the star's "We Found Love" video in Northern Ireland. They used her as a stand-in before she was cast in the Armani ad.

A spokesman from the Advertising Standards Authority, the UK's independent regulator of advertising, said, "If we have complaints consumers have been misled by the use of a body double, we will investigate."